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What happens to the half life as the sample gets older?

The half life of a sample is the time in which the sample decays to half its mass. It depends only on the material(to be exact on its decay constant) and not the quantity .Hence, the half life of the sample remains the same.


What is the half-life of a radioisotope if a 40g sample becomes 10g after 20 minutes'?

The half-life of the radioisotope is 20 minutes. This means that in 20 minutes, half of the original sample (20g) remains. Therefore, if a 40g sample becomes 10g after 20 minutes, it has undergone 1 half-life.


What is the term given to the time it take for one half of a sample of radioactive nuclei to decay?

The term is called half-life. It is the time it takes for half of the radioactive nuclei in a sample to decay.


As a sample of a radioactive element decays its half-life?

The half-life of a radioactive element is the time it takes for half of the atoms in a sample to decay. As the sample decays, the number of radioactive atoms decreases while the number of stable atoms increases. The process continues in this manner, with each half-life reducing the amount of radioactive material by half.


A substance is the time required for half the atoms in a sample of a radioactive isotope to decay?

The time it takes for half the sample to decay is called the half-life.The time it takes for half the sample to decay is called the half-life.The time it takes for half the sample to decay is called the half-life.The time it takes for half the sample to decay is called the half-life.